Butt gauge



July 27 1926. 1,593,826

A. G. HJERT BUTT GAUGE Filed July 22, 1924 /N l/E/VTOR And/"6W (778/7Patented July 27, 192$.

UNITED STATES ANDREW e. I-IJERT, or SEATTLE, WASHINGTON.

BUTT GAUGE.

Application filed July 22, 1924. Serial No. 727,409.

The invention is a gauge. for marking the location of objects such ashinges plates or locks on door or window frames or the like.

The object of the invention is to provide a simple and etlicient devicefor marking mortise cuts, in which the distance between the marks may beadjusted.

Another object of the invention is to provide a gauge for markingmortise cuts with disc markers. A i

A further object of the invention is to provide a mortise marking gaugewith a guide and marker at one end that may be set so that the locationof the hinge mortise may be marked in both the frame and door withoutresetting the gauge.

And a still further object of the invention is to provide a mortisemarking gauge with adjustable markers at each end so that the locationof a hinge or plate may be marked in both the frame and door and thethickness also marked without resetting the gauge.

ith these ends in view the invention embodies discs rotatably mounted atthe ends of bars which are slidably held in a casing and a guideslidably supported beyond one or the discs; said supporting means andsliding bars being provided with set screws for holding them inditlj'erent positions.

Other features and advantages of the invention will be seen from thefollowing description taken in connection with the drawings, whereinFigure 1 is a plan view.

Figure 2 is a side View.

Figure. 3 is a cross section through the device.

Figure 4 is a similar view showing an alternate arrangement.

In the drawings I have shown my device as it would be constructedwherein numeral 1 indicates the casing, numeral 2 the disc at one end,numeral 3 a similar disc at the opposite end, and numeral 1 a guidewhich extends beyond the disc 3.

The casing 1' may be constructed as shown in Figures 1, 2, and 3 inwhich it is shown as a sheet metal stamping or as shown in Figure 4 witha rectangular shaped casing having partitions through it, or in anyother suitable manner. In the preferred design shown in Figures 1, 2,and 3 the casing is made with a plain base 5, sides 6 and 7 having slots8 and 9 in them, a top 10 having a slot 11 in it, and end plates 12 and13 having openings in them through which the sliding members supportingthe discs and guide may pass. it will be seen that the entire casing maybe stamped from a piece of sheet metal with the sides bent upward, thetop bent across so that projections 14 on the upper edge of the sides 7may extend through openings 15 in its outer edge. The upper ends oi?these projections may be peanedas shown at the points 16 in Figure 3 sothat the top will be rigidly held to the sides and the edge oi? the topmay reinforced by extensions 17 at these points in order to provide arigid joint. The ends of the top may also be provided with extensions 18which will lit into small openings in the ends 12 and 13 to hold theends and top rigid. These projections may also be peaned.

The disc 2 is rotatably mounted on a sliding bar 19 as shown in Figure 2in which 7 the disc is provided with an oil-set 20 and held by a screw21 in a recess 22. The screw 21 is threaded into the bar 19 as shown.The bar 19 extends into the casing 1 to the point indicated by thedotted line 28 when the disc is in the position shown and the inner endof the bar is provided with a setscrew 24 which when screwed in bindsthe bar against the under side of the top 10 of the casing. lt will beseen that the disc may be adjusted to any suitable position from the endof the bar by loosening and tightening the screw 24.

The disc 3 is rotatably held at the outer end of a bar 25 which isslidably held by a set screw 26 in a similar manner to that of the bar19, and it will also be seen that this disc may be set to any suitabledistance from the end of the casing 1 in the same manner. The under sideof the bar 25 may be pro- 5 vided with notches 27 indicated in dottedlines in Figure 1 and these notches may be graduated to any suitablescale.

The guide 4 is rigidly attached to the ends of two bars 28 and 29 andthese bars 1 are slidably held in the casing 1 and held in differentpositions by set screws 30 and 31 which pass through the slots 8 and 9in the sides 6 and 7 in a manner similar to that of the set screw 24which holds the bar 19. This guide may also be adjusted to any suitabledistance from the end of the casing l by loosening and tightening theset screws 30 and 31. The bars 28 and 29 are also provided with notches32 which may be 'raduated to any suitable scale and which w en in thedesign shown are somewhat larger than the notches so that as the disc isset to a given number of notches from the end oi: the casing and theguide set to the same number of notches the disc will be adaptable tomark the inner edge of a. strike plate or the like in a door frame withthe guide butting the stop and also for marking the edge of the lock inthe door with a plate 13 hearing against the edge of the door. It willalso be seen that this disc and guide may be set in a similar manner tomark the inner edge oi? a hinge in the :trame and on the edge of thedoor and also for any other (esired purpose. At the same time the disc 2at the opposite end of the device may be set to the thickness of theplate or hinge so that the gauge may be reversed to mark this thicknesson the frame or door.

The distance between the discs or marking points is also adjustable sothat they may be set to allow For the diflerent thicknesses of stain,varnish, paint or enamel.

In the design shown in Figure l the sliding bars for supporting the discand guide are made round so that holes may be drilled into a block orthrough partitions in-a block. The set screws may be screwed into thebars through slots in the casing or block in a similar manner and thearrangement and operation will otherwise be exactly the same asdescribed for the device shown in Figures 1, 2, and 3.

It will be understood that changes may be made in the constructionwithout departing from the spirit of the invention. One of which changesmay be in the general design of the block or casing; another may be inthe use of points, as shown in Figure 3, for markers instead of thediscs;

another may be in the use of one set screw instead 01' two to hold theguide l, or in the supporting of this guide on one bar instead of two;and still another may be in the use of more than one bar for support ingthe discs or in the means for attachingthe discs to the ends of thebars.

The construction will be readily understood trom the 'loregoingdescription. To use the device it may be assembled as shown and it willbe seen that by setting the markers and guide to predetermined positionsit will be possible to gauge or mark all mortises for objects in doorsand frames or other similar devices without resetting the gauge. Thiswill make it possible for a carpenter hanging doors all day to set hisgauge at the beginning of the day and use it continuously withoutresetting.

Having thus fully described the invention, what I claim as new anddesire to secure by Letters Patent, is

In a butt gauge of the class described, a rectangular shaped casinghaving slots in the sides and top and transverse plates projecting atone end thereof, a bar having a rotating disc with sharp edges mountedthereon and another similar, but graduated, bar with a similar discmounted on the end thereof, slidably mounted and projecting from theopposite ends of said casing, other graduated bars slidably mounted inthe cas ing on each side of said graduated bar, said other bars having atransverse guide memher at their outer ends, and screws adapted to passthru said slots into each of said bars and thus adjustably hold all of.said bars on said casing.

ANDREW G. HJERT.

